Face it: Most of us don’t know what we’re doing. We’re making it up as we go along, and any guidance offered by more experienced people can be precious. We’ll take any help we can get. That’s why, every week, we ask notable people how they work.

This year, Android got even sweeter. Marshmallow built on the already-awesome foundation Lollipop laid the year before, plus we got two new Nexus phones, and a bunch of improved apps. Here are our best Android posts this year.

Every week, we feature customized desktops and home screens submitted by readers that show off beautiful wallpapers and great customization and UI tweaks. Sometimes they’re fun, sometimes they’re functional, and sometimes they’re both, but 2015 was a great year for all of them. Here’s a look at your favorite ones.

In between tips and how-tos, we also often do “explainers,” where we break down complicated topics into simple language. Our goal is to help you understand how these difficult topics work, and show you what you can do with the knowledge. Here are our best from the past year.

It’s been another year, which means yet another iteration on OS X. While Apple didn’t make any major moves with the Mac this year, there was still plenty to talk about. Here are our best Mac posts from this past year.

Windows 10 made huge waves this year, adding a ton of new improvements, cleaning up a lot of old features, and did we mention it’s free? Here are our best Windows posts from one the platform’s biggest years in history.

For something so important, there’s an awful lot of confusion over health and nutrition. This year, we covered more health and fitness than ever before, in an effort to dispel that confusion. Here were our best health-related posts of 2015.

We’re always looking for the best DIY tips at Lifehacker, and this year there was certainly no shortage of them. Here are some of the best DIY tips for when you want to tackle projects all on your own.

Cooking tips aren’t just for foodies. We all eat every day (unless you’re a robot), and better cooking means healthier food, more delicious meals, and possibly even saving some cash. here were our best food hacks and tips from 2015.